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pthread_exit and pthread_join usage

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# 8  
Old 06-10-2010
My bad - that #define works for __VOID, but not for int. If you change your "int *nm = __INT(ret);" to "int *nm = (int*)ret;", you should get the right result.

Sorry for any confusion.
# 9  
Old 06-10-2010
Great... thank you John.... Now... I must only understand....
prompt
# 10  
Old 06-10-2010
Quote:
Originally Posted by prompt
Great... thank you John.... Now... I must only understand....
If it's any help, I think it's much easier if you just discard __VOID and __INT and do casting etc. manually - either way, they won't be doing anything complicated, except hiding what's really going on!
# 11  
Old 06-14-2010
well, firstly you shouldn't use underscores in your defines.
they are possibly used for compiler and library implementation details.

you are casting a pointer to a int ** in the return.
you are already returning a pointer.

you don't need to cast to a void pointer.
and as y is a global why do you need to?

Code:
int y = 10;

void *th(void *g){
        //pthread_exit(__VOID(y));
        pthread_exit(&y);
}
int main(int argn, char ** argp){
        void *ret;
        pthread_t thread;
        pthread_create(&thread, NULL, th, NULL);
        pthread_join(thread, &ret);
        int *nm = (int *)(ret);
        printf("%d\n", *nm);
        return 0;
}
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